Image capturing lens system, image capturing apparatus and electronic device

ABSTRACT

An image capturing lens system, including, in order from an object side to an image side: a first lens element with positive refractive power having an object-side surface being convex thereof; a second lens element having negative refractive power; a third lens element; a fourth lens element; a fifth lens element with negative refractive power having at least one of an object-side surface and an image-side surface thereof being aspheric and having at least one inflection point thereof; and a sixth lens element with positive refractive power having both an object-side surface and an image-side surface being convex thereof and at least one of the object-side surface and the image-side surface thereof being aspheric; wherein the image capturing lens system has a total of six lens elements.

RELATED APPLICATIONS

This application claims priority to Taiwan Application Serial Number104134322, filed on Oct. 20, 2015, which is incorporated by referenceherein in its entirety.

BACKGROUND

Technical Field

The present disclosure relates to an image capturing lens system and animage capturing apparatus, and more particularly, to an image capturinglens system and an image capturing apparatus applicable to electronicdevices.

Description of Related Art

With the wide adoptions of the image capturing modules, utilizing imagecapturing modules in various applications such as smart consumerelectronics, car devices and smart household electronics has become atrend to the future development of technology. Also, in order to obtainmore extensive user experiences, smart devices with multi-lens systemshave become the main stream in the market and thus various types of lenssystems with different characteristics are developed to meet therequirements of various applications.

Currently, most compact lens systems adopted in the consumer electronicsfocus on the imaging quality of macro and wide angle photography.However, the optical designs of those lens systems couldn't satisfy theneed for telephoto photography. Most conventional optical systems fortelephoto adopt multi-lens structures with spherical glass lenses whichresults in an overly large lens system and a unit price being too highto be applied in various products or devices. Therefore, theconventional optical systems fail to meet the need of the currenttechnology trend.

SUMMARY

According to one aspect of the present disclosure, an image capturinglens system comprising, in order from an object side to an image side: afirst lens element with positive refractive power having an object-sidesurface being convex thereof; a second lens element having negativerefractive power; a third lens element; a fourth lens element; a fifthlens element with negative refractive power having at least one of anobject-side surface and an image-side surface thereof being aspheric andhaving at least one inflection point thereof; and a sixth lens elementwith positive refractive power having both an object-side surface and animage-side surface being convex thereof and at least one of theobject-side surface and the image-side surface thereof being aspheric;wherein the image capturing lens system has a total of six lenselements; wherein an axial distance between the image-side surface ofthe sixth lens element and an image surface is BL, an axial distancebetween the object-side surface of the first lens element and theimage-side surface of the sixth lens element is TD, a focal length ofthe image capturing lens system is f, a curvature radius of theobject-side surface of the first lens element is R1, an axial distancebetween the fifth lens element and the sixth lens element is T56, acentral thickness of the first lens element is CT1, and the followingconditions are satisfied:

0<BL/TD<0.40;

3.10<f/R1<7.50; and

T56<CT1.

According to another aspect of the present disclosure, an imagecapturing lens system, comprising, in order from an object side to animage side: a first lens element with positive refractive power havingan object-side surface being convex thereof; a second lens elementhaving negative refractive power; a third lens element; a fourth lenselement; a fifth lens element with negative refractive power having animage-side surface being concave, at least one of an object-side surfaceand the image-side surface thereof being aspheric, and at least oneinflection point thereof; and a sixth lens element with positiverefractive power having an image-side surface being convex thereof andat least one of an object-side surface and the image-side surfacethereof being aspheric; wherein the image capturing lens system has atotal of six lens elements; wherein an axial distance between theimage-side surface of the sixth lens element and an image surface is BL,an axial distance between the object-side surface of the first lenselement and the image-side surface of the sixth lens element is TD, afocal length of the image capturing lens system is f, a curvature radiusof the object-side surface of the first lens element is R1, a curvatureradius of the image-side surface of the fifth lens element is R10, anaxial distance between the fifth lens element and the sixth lens elementis T56, an axial distance between the fourth lens element and the fifthlens element is T45, and the following conditions are satisfied:

0<BL/TD<0.40;

3.10<f/R1<7.50;

0.50<f/R10; and

T56<T45.

According to yet another aspect of the present disclosure, an imagecapturing apparatus is provided, which includes the aforementioned imagecapturing lens system and an image sensor.

According to the other aspect of the present disclosure, an electronicdevice is provided, which includes the aforementioned image capturingapparatus.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a schematic view of an image capturing apparatus according tothe 1st embodiment of the present disclosure;

FIG. 1B shows longitudinal spherical aberration curves, astigmatic fieldcurves and a distortion curve of the image capturing apparatus accordingto the 1st embodiment;

FIG. 2A is a schematic view of an image capturing apparatus according tothe 2nd embodiment of the present disclosure;

FIG. 2B shows longitudinal spherical aberration curves, astigmatic fieldcurves and a distortion curve of the image capturing apparatus accordingto the 2nd embodiment;

FIG. 3A is a schematic view of an image capturing apparatus according tothe 3rd embodiment of the present disclosure;

FIG. 3B shows longitudinal spherical aberration curves, astigmatic fieldcurves and a distortion curve of the image capturing apparatus accordingto the 3rd embodiment;

FIG. 4A is a schematic view of an image capturing apparatus according tothe 4th embodiment of the present disclosure;

FIG. 4B shows longitudinal spherical aberration curves, astigmatic fieldcurves and a distortion curve of the image capturing apparatus accordingto the 4th embodiment;

FIG. 5A is a schematic view of an image capturing apparatus according tothe 5th embodiment of the present disclosure;

FIG. 5B shows longitudinal spherical aberration curves, astigmatic fieldcurves and a distortion curve of the image capturing apparatus accordingto the 5th embodiment;

FIG. 6A is a schematic view of an image capturing apparatus according tothe 6th embodiment of the present disclosure;

FIG. 6B shows longitudinal spherical aberration curves, astigmatic fieldcurves and a distortion curve of the image capturing apparatus accordingto the 6th embodiment;

FIG. 7A is a schematic view of an image capturing apparatus according tothe 7th embodiment of the present disclosure;

FIG. 7B shows longitudinal spherical aberration curves, astigmatic fieldcurves and a distortion curve of the image capturing apparatus accordingto the 7th embodiment;

FIG. 8A is a schematic view of an image capturing apparatus according tothe 8th embodiment of the present disclosure;

FIG. 8B shows longitudinal spherical aberration curves, astigmatic fieldcurves and a distortion curve of the image capturing apparatus accordingto the 8th embodiment;

FIG. 9A shows an electronic device with an image capturing apparatus ofthe present disclosure installed therein;

FIG. 9B shows another electronic device with an image capturingapparatus of the present disclosure installed therein; and

FIG. 9C shows yet another electronic device with an image capturingapparatus of the present disclosure installed therein.

DETAILED DESCRIPTION

The present disclosure provides an image capturing lens systemincluding, in order from an object side to an image side, a first lenselement, a second lens element, a third lens element, a fourth lenselement, a fifth lens element, and a sixth lens element.

The first lens element has positive refractive power so as to providemajor focusing power for the image capturing lens system and thus thesize of the image capturing lens system can be effectively controlledand the portability can be increased. The first lens element has anobject-side surface being convex in a paraxial region, which isfavorable for enhancing the positive refractive power and furtherminiaturizing the lens system. The first lens element may have animage-side surface being concave, which can correct aberrations of thelens system.

The second lens element has negative refractive power so as to correctchromatic aberration of the lens system. The second lens element mayhave an object-side surface being concave for balancing the positiverefractive power of the first lens element.

The third lens element may have at least one inflection point so as tocorrect aberrations in an off-axial region.

The fourth lens element may have positive or negative refractive powerin accordance with the configuration of the lens system to correctaberrations and reduce the sensitivity of the lens system.

The fifth lens element has negative refractive power, at least one of anobject-side surface and an image-side surface being aspheric so as toform a symmetrical structure with the second lens element to improve thesymmetry of the lens system. The fifth lens element further has at leastone inflection point to correct aberrations in an off-axial region toimprove the image quality. The image-side surface of the fifth lenselement may be concave to further strengthen the aberration correctingability of the lens system.

The sixth lens element has positive refractive power so as to form asymmetrical structure with the first lens element to improve thesymmetry of the lens system. Both an object-side surface and animage-side surface of the sixth lens element are convex and there is atleast one surface being aspheric so as to correct aberrations in theoff-axial region and therefore improve the image quality.

The image capturing lens system has a total of six lens elements. Whenan axial distance between the image-side surface of the sixth lenselement and an image surface is BL, an axial distance between theobject-side surface of the first lens element and the image-side surfaceof the sixth lens element is TD, and the following condition issatisfied: 0<BL/TD<0.40, the back focus of the lens system can beeffectively controlled and avoid an excessive total track length.

When a focal length of the image capturing lens system is f, a curvatureradius of the object-side surface of the first lens element is R1, andthe following condition is satisfied: 3.10<f/R1<7.50, the lens systemobtains the functionality of telephoto and also effectively limits thetotal track length of the lens system.

When an axial distance between the fifth lens element and the sixth lenselement is T56, a central thickness of the first lens element is CT1,and the following condition is satisfied: T56<CT1, the symmetricalstructure of the first lens element and the sixth lens element isenhanced so as to improve the symmetry of the lens system for higherimage quality

When the focal length of the image capturing lens system is f, acurvature radius of the image-side surface of the fifth lens element isR10, and the following condition is satisfied: 0.50<f/R10, the backfocal length of the lens system can be compressed and the volume of thelens system can be controlled to avoid a waste of space. Preferably, thefollowing condition is satisfied: 1.0<f/R10.

When an axial distance between the fifth lens element and the sixth lenselement is T56, an axial distance between the fourth lens element andthe fifth lens element is T45, and the following condition is satisfied:T56<T45, a more appropriate arrangement of the fifth lens system isprovided to correct aberrations of the lens system. Preferably, thefollowing condition is satisfied: T56/T45<0.6. T45 may be the largestamong all axial distances between any two adjacent lens elements of thefirst lens element, the second lens element, the third lens element, thefourth lens element, the fifth lens element, and the sixth lens elementin the image capturing lens system to provide excellent telephotoperformance.

The image capturing lens system can further comprise an aperture stopdisposed between an imaged object and the third lens element and theproperties between telecentric effect and wide angle of view of the lenssystem are balanced thereby.

Each of the first lens element, the second lens element, the third lenselement, the fourth lens element, the fifth lens element, and the sixthlens element may be a single and non-cemented lens element to avoidadverse influences from the cementing process.

When an Abbe number of the sixth lens element is V6 and the followingcondition is satisfied: V6<30, chromatic aberration of the lens systemcan be balanced and thus better image quality can be obtained.

When a curvature radius of the object-side surface of the sixth lenselement is R11, a curvature radius of the image-side surface of thesixth lens element is R12, and the following condition is satisfied:−1.0<(R11+R12)/(R11−R12)<1.0, spherical aberration can be reduced inorder to maintain better image quality.

When a curvature radius of the object-side surface of the third lenselement is R5, a curvature radius of the image-side surface of the thirdlens element is R6, and the following condition is satisfied:−1.0<(R5−R6)/(R5+R6)<1.0, aberrations of the lens system are reducedthereby.

When an entrance pupil diameter of the image capturing lens system isEPD, a maximum image height of the image capturing lens system is ImgH,and the following condition is satisfied: 0.70<EPD/ImgH<1.50, the ratioof the incident light range and the image forming area can be balancedin order to provide sufficient light for the lens system and improve theimage brightness.

When an axial distance between the object-side surface of the first lenselement and the image surface is TL, the focal length of the imagecapturing lens system is f, and the following condition is satisfied:0.85<TL/f<1.10, the angle of the view is effectively controlled forbetter telephoto imaging.

When a vertical distance between a critical point on the image-sidesurface of the fifth lens element and an optical axis is Yc52, the focallength of the image capturing lens system is f, and the followingcondition is satisfied: 0.05<Yc52/f<0.50, Petzval's sum can be correctedand the image quality of the field in an off-axial region is improved.

When the focal length of the image capturing lens system is f and thefollowing condition is satisfied: 4.0 mm<f<12.0 mm, the image capturinglens system can be more compact thereby.

When the focal length of the image capturing lens system is f, themaximum image height of the image capturing lens system is ImgH, and thefollowing condition is satisfied: 2.35<f/ImgH, the imaged region iscontrolled and the resolution of the image is improved.

When the focal length of the image capturing lens system is f, a focallength of the third lens element is f3, a focal length of the fourthlens element is f4, a focal length of the second lens element is f2, andthe following condition is satisfied: (|f/f3|+|f/f4|)/|f/f2|<1.0, therefractive power of the third lens element and the fourth lens elementare more appropriate and aberrations of the lens system can be correctedthereby.

The first lens element, the second lens element, the third lens element,the fourth lens element, the fifth lens element and the sixth lenselement can be made of plastic material so as to reduce the productioncost and increase the productivity of the lens elements.

When a maximum refractive index among the first lens element, the secondlens element, the third lens element, the fourth lens element, the fifthlens element and the sixth lens element is Nmax, and the followingcondition is satisfied: Nmax<1.70, a better arrangement of the materialsof the lens elements can be obtained and the distribution of therefractive power of each the lens element is balanced thereby.

All the object-side surfaces and image-side surfaces of the first lenselement, the second lens element, the third lens element, the fourthlens element, the fifth lens element and the sixth lens element may beaspheric to enlarge the degree of freedom in design and improve theaberration correcting ability of the lens system.

When a half of the maximal field of view of the image capturing lenssystem is HFOV, and the following condition is satisfied:0<tan(2*HFOV)<1.0, the imaged region can be effectively controlled and agood telephoto imaging ability is provided thereby and hence the need ofbetter telephoto imaging can be fulfilled.

When an Abbe number of the first lens element is V1, an Abbe number ofthe second lens element is V2, an Abbe number of the third lens elementis V3, and the following condition is satisfied: (V2+V3)V1<1.0, thechromatic aberration of the lens system can be corrected and hence theimage quality can be improved thereby.

When a focal length of the first lens element is f1, the focal length ofthe second lens element is f2, the focal length of the third lenselement is f3, the focal length of the fourth lens element is f4, afocal length of the fifth lens element is f5, a focal length of thesixth lens element is f6, and |f1|, f2| and |f5| are smaller than |f3|,|f4| and |f6|, the refractive power distribution of the entire lenssystem is more suitable for telephoto imaging with better imagingresults.

When an axial distance between the aperture stop and the image-sidesurface of the sixth lens element is SD, the axial distance between theobject-side surface of the first lens element and the image-side surfaceof the sixth lens element is TD, and the following conditions aresatisfied, 0.70<SD/TD<1.0, the properties between telecentric effect andwide angle of view of the lens system are balanced thereby.

When an axial distance between the first lens element and the secondlens element is T12, the axial distance between the fifth lens elementand the sixth lens element is T56, an axial distance between the secondlens element and the third lens element is T23, an axial distancebetween the third lens element and the fourth lens element is T34, theaxial distance between the fourth lens element and the fifth lenselement is T45, and the following conditions are satisfied:(T12+T56)/(T23+T34+T45)<0.30, the arrangement of the first lens elementand the sixth lens element in the lens system is more appropriate and abetter symmetry of the lens system is provided thereby.

When the curvature radius of the object-side surface of the first lenselement is R1, a curvature radius of the image-side surface of the sixthlens element is R12, and the following condition is satisfied:−1.0<(R1+R12)/(R1−R12)<0, the curvature radius of the object-sidesurface of the first lens element and the image-side surface of thesixth lens element are more appropriate and the symmetry of the lenssystem is further improved thereby.

When an axial distance between the object-side surface of the first lenselement and the image surface is TL, a vertical distance between amaximum effective diameter position on the image-side surface of thesixth lens element and an optical axis is Y62, a vertical distancebetween a maximum effective diameter position on the object-side surfaceof the first lens element and the optical axis is Y11, and the followingcondition is satisfied: 5.5<TL/(Y62−Y11)<12.0, a localized imageresolution of telephoto is enhanced for usage in more aspects ofapplications.

According to the image capturing lens system of the present disclosure,the lens elements thereof can be made of glass or plastic material. Whenthe lens elements are made of glass material, the distribution of therefractive power of the image capturing lens system may be more flexibleto design. When the lens elements are made of plastic material, themanufacturing cost can be effectively reduced. Furthermore, surfaces ofeach lens element can be arranged to be aspheric (ASP). Since theseaspheric surfaces can be easily formed into shapes other than sphericalshapes so as to have more controllable variables for eliminatingaberrations and to further decrease the required number of lenselements, the total track length of the image capturing lens system canbe effectively reduced.

According to the image capturing lens system of the present disclosure,the image capturing lens system can include at least one stop, such asan aperture stop, a glare stop or a field stop, so as to favorablyreduce the amount of stray light and thereby to improve the imagequality.

According to the image capturing lens system of the present disclosure,an aperture stop can be configured as a front stop or a middle stop. Afront stop disposed between an imaged object and the first lens elementcan provide a longer distance between an exit pupil of the imagecapturing lens system and the image surface, so that the generatedtelecentric effect can improve the image-sensing efficiency of an imagesensor, such as a CCD or CMOS sensor. A middle stop disposed between thefirst lens element and the image surface is favorable for enlarging thefield of view of the image capturing lens system, thereby providing theimage capturing lens system the advantages of a wide-angle lens.

According to the image capturing lens system of the present disclosure,when the lens element has a convex surface and the region of convexshape is not defined, it indicates that the surface can be convex in theparaxial region thereof. When the lens element has a concave surface andthe region of concave shape is not defined, it indicates that thesurface can be concave in the paraxial region thereof. Likewise, whenthe region of refractive power or focal length of a lens element is notdefined, it indicates that the region of refractive power or focallength of the lens element can be in the paraxial region thereof.

According to the image capturing lens system of the present disclosure,the image surface of the image capturing lens system, based on thecorresponding image sensor, can be a plane or a curved surface with anycurvature, especially a curved surface being concave facing towards theobject side.

The image capturing lens system of the present disclosure can beoptionally applied to moving focus optical systems. According to theimage capturing lens system of the present disclosure, the imagecapturing lens system features a good correction capability and highimage quality, and can be applied to 3D (three-dimensional) imagecapturing applications and electronic devices, such as digital cameras,mobile devices, digital tablets, smart TV, network surveillance devices,motion sensing input devices, driving recording systems, rear viewcamera systems, and wearable devices.

According to the present disclosure, an image capturing apparatus isprovided, which includes the aforementioned image capturing lens systemand the image sensor, wherein the image sensor is disposed on or near animage surface of the image capturing lens system. Therefore, the designof the image capturing lens system enables the image capturing apparatusto achieve the best image quality. Preferably, the image capturing lenssystem can further include a barrel member, a holder member or acombination thereof.

Referring to FIG. 9A, FIG. 9B and FIG. 9C, an image capturing apparatus901 may be installed in an electronic device including, but not limitedto, a smartphone 910, a tablet personal computer 920 or a wearabledevice 930. The three exemplary figures of different electronic devicesare only exemplary for showing the image capturing apparatus of thepresent disclosure installed in an electronic device, and the presentdisclosure is not limited thereto. Preferably, the electronic device canfurther include a control unit, a display unit, a storage unit, a randomaccess memory unit (RAM) or a combination thereof.

According to the above description of the present disclosure, thefollowing 1st-8th specific embodiments are provided for furtherexplanations.

1st Embodiment

FIG. 1A is a schematic view of an image capturing apparatus according tothe 1st embodiment of the present disclosure. FIG. 1B shows, in orderfrom left to right, longitudinal spherical aberration curves, astigmaticfield curves and a distortion curve of the image capturing apparatusaccording to the 1st embodiment.

In FIG. 1A, the image capturing apparatus includes an image capturinglens system (not otherwise herein labeled) of the present disclosure andan image sensor 190. The image capturing lens system includes, in orderfrom an object side to an image side, an aperture stop 100, a first lenselement 110, a second lens element 120, a third lens element 130, afourth lens element 140, a fifth lens element 150, and a sixth lenselement 160.

The first lens element 110 with positive refractive power has anobject-side surface 111 being convex in a paraxial region thereof and animage-side surface 112 being concave in a paraxial region thereof, whichare both aspheric, and the first lens element 110 is made of plasticmaterial.

The second lens element 120 with negative refractive power has anobject-side surface 121 being concave in a paraxial region thereof andan image-side surface 122 being concave in a paraxial region thereof,which are both aspheric, and the second lens element 120 is made ofplastic material.

The third lens element 130 with positive refractive power has anobject-side surface 131 being convex in a paraxial region thereof and animage-side surface 132 being concave in a paraxial region thereof, whichare both aspheric and have inflection points. The third lens element 130is made of plastic material.

The fourth lens element 140 with positive refractive power has anobject-side surface 141 being concave in a paraxial region thereof andan image-side surface 142 being convex in a paraxial region thereof,which are both aspheric, and the fourth lens element 140 is made ofplastic material.

The fifth lens element 150 with negative refractive power has anobject-side surface 151 being concave in a paraxial region thereof andan image-side surface 152 being concave in a paraxial region thereof,which are both aspheric and have inflection points. The fifth lenselement 150 is made of plastic material.

The sixth lens element 160 with positive refractive power has anobject-side surface 161 being convex in a paraxial region thereof and animage-side surface 162 being convex in a paraxial region thereof, whichare both aspheric, and the sixth lens element 160 is made of plasticmaterial.

The image capturing lens system further includes an IR cut filter 170located between the sixth lens element 160 and an image surface 180. TheIR cut filter 170 is made of glass material and will not affect thefocal length of the image capturing lens system. The image sensor 190 isdisposed on or near the image surface 180 of the image capturing lenssystem.

The detailed optical data of the 1st embodiment are shown in TABLE 1,and the aspheric surface data are shown in TABLE 2, wherein the units ofthe curvature radius, the thickness and the focal length are expressedin mm, and HFOV is a half of the maximal field of view.

TABLE 1 (1st Embodiment) f = 6.20 mm, Fno = 2.60, HFOV = 20.8 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length0 Object Plano Infinity 1 Ape. Stop Plano −0.556 2 Lens 1 1.564 ASP0.930 Plastic 1.544 56.0 2.99 3 31.758 ASP 0.186 4 Lens 2 −44.351 ASP0.250 Plastic 1.639 23.5 −4.67 5 3.205 ASP 0.527 6 Lens 3 9.663 ASP0.338 Plastic 1.544 56.0 1607.98 7 9.650 ASP 0.331 8 Lens 4 −18.268 ASP0.396 Plastic 1.639 23.5 42.17 9 −10.977 ASP 0.876 10 Lens 5 −10.622 ASP0.331 Plastic 1.544 56.0 −4.63 11 3.341 ASP 0.127 12 Lens 6 22.127 ASP0.884 Plastic 1.639 23.5 16.79 13 −20.470 ASP 0.300 14 IR Cut FilterPlano 0.210 Glass 1.517 64.2 15 Plano 0.216 16 Image Surface Plano Note:Reference wavelength is d-line 587.6 nm

TABLE 2 Aspheric Coefficients Surface # 2 3 4 5 k = −1.0422E−016.3260E+01 −7.3778E+01 −1.1468E+00 A4 = 5.9279E−03 −2.7661E−02−1.0725E−01 −4.4849E−02 A6 = −3.8975E−03 −9.6731E−03 1.9351E−012.7318E−01 A8 = 1.4508E−02 2.0694E−01 1.2238E−01 −7.4407E−02 A10 =−1.1007E−02 −3.3157E−01 −5.4985E−01 −1.2947E−01 A12 = 5.2654E−032.3573E−01 4.9928E−01 9.0637E−02 A14 = −6.7427E−02 −1.6523E−01 Surface #6 7 8 9 k = 3.3839E+01 6.3338E+01 3.9095E+01 3.4521E+01 A4 = −7.8106E−033.8423E−03 −1.2216E−02 −2.6235E−03 A6 = 6.4730E−02 6.0197E−02 4.2458E−03−1.0102E−03 A8 = 1.2900E−01 6.8136E−02 9.3324E−05 5.0678E−04 A10 =−2.3188E−01 −1.1957E−01 1.3554E−04 −2.2581E−06 A12 = 1.5174E−018.6201E−02 A14 = −4.1142E−02 −3.0009E−02 Surface # 10 11 12 13 k =3.7259E+01 1.1170E−01 −9.0000E+01 7.3132E+01 A4 = −1.3650E−01−1.7920E−01 −8.3888E−02 −8.3507E−02 A6 = −3.1139E−02 4.1315E−029.4433E−02 7.6778E−02 A8 = 8.0188E−02 3.1426E−02 −4.8400E−02 −3.3033E−02A10 = −3.5736E−02 −2.7518E−02 1.3883E−02 8.0335E−03 A12 = 3.1094E−038.8466E−03 −2.3698E−03 −1.1644E−03 A14 = 1.6580E−03 −1.3770E−032.2308E−04 9.3121E−05 A16 = −3.1116E−04 8.6696E−05 −8.8134E−06−3.0641E−06

The equation of the aspheric surface profiles is expressed as follows:

${X(Y)} = {{\left( {Y^{2}/R} \right)/\left( {1 + {{sqrt}\left( {1 - {\left( {1 + k} \right)*\left( {Y/R} \right)^{2}}} \right)}} \right)} + {\sum\limits_{i}\; {({Ai})*\left( Y^{i} \right)}}}$

where:

X is the relative distance between a point on the aspheric surfacespaced at a distance Y from the optical axis and the tangential plane atthe aspheric surface vertex on the optical axis;

Y is the vertical distance from the point on the aspheric surfaceprofile to the optical axis;

R is the curvature radius;

k is the conic coefficient; and

Ai is the i-th aspheric coefficient.

In the 1st embodiment, a focal length of the image capturing lens systemis f, an f-number of the image capturing lens system is Fno, a half of amaximal field of view of the image capturing lens system is HFOV, andthese parameters have the following values: f=6.20 mm; Fno=2.60; andHFOV=20.8 degrees.

In the 1st embodiment, an Abbe number of the sixth lens element is V6,and it satisfies the condition: V6=23.5.

In the 1st embodiment, an Abbe number of the second lens element is V2,an Abbe number of the third lens element is V3, an Abbe number of thefirst lens element is V1, and they satisfy the condition:(V2+V3)/V1=1.42.

In the 1st embodiment, a maximum refractive index among the first lenselement, the second lens element, the third lens element, the fourthlens element, the fifth lens element and the sixth lens element is Nmax,and it satisfies: Nmax=1.639.

In the 1st embodiment, an axial distance between the fifth lens elementand the sixth lens element is T56, an axial distance between the fourthlens element and the fifth lens element is T45, and they satisfy thecondition: T56/T45=0.14.

In the 1st embodiment, an axial distance between the first lens elementand the second lens element is T12, the axial distance between the fifthlens element and the sixth lens element is T56, an axial distancebetween the second lens element and the third lens element is T23, anaxial distance between the third lens element and the fourth lenselement is T34, the axial distance between the fourth lens element andthe fifth lens element is T45, and they satisfy the condition:(T12+T56)/(T23+T34+T45)=0.18.

In the 1st embodiment, the focal length of the image capturing lenssystem is f, a curvature radius of the object-side surface of the firstlens element is R1, and they satisfy the condition: f/R1=3.96.

In the 1st embodiment, the focal length of the image capturing lenssystem is f, a curvature radius of the image-side surface of the fifthlens element is R10, and they satisfy the condition: f/R10=1.86.

In the 1st embodiment, the curvature radius of the object-side surfaceof the first lens element is R1, a curvature radius of the image-sidesurface of the sixth lens element is R12, and they satisfy thecondition: (R1+R12)/(R1−R12)=−0.86.

In the 1st embodiment, a curvature radius of the object-side surface ofthe third lens element is R5, a curvature radius of the image-sidesurface of the third lens element is R6, and they satisfy the condition:(R5−R6)/(R5+R6)=0.0006.

In the 1st embodiment, a curvature radius of the object-side surface ofthe sixth lens element is R11, the curvature radius of the image-sidesurface of the sixth lens element is R12, and they satisfy thecondition: (R11+R12)/(R11−R12)=0.04.

In the 1st embodiment, the focal length of the image capturing lenssystem is f, a focal length of the third lens element is f3, a focallength of the fourth lens element is f4, a focal length of the secondlens element is f2, and they satisfy the condition:(|f/f3|+|f/f4|)/|f/f2|=0.11.

In the 1st embodiment, a vertical distance between a critical point onthe image-side surface of the fifth lens element and an optical axis isYc52, the focal length of the image capturing lens system is f, and theysatisfy the condition: Yc52/f=0.12.

In the 1st embodiment, an axial distance between the object-side surfaceof the first lens element and the image surface is TL, the focal lengthof the image capturing lens system is f, and they satisfy the condition:TL/f=0.95.

In the 1st embodiment, an axial distance between the aperture stop andthe image-side surface of the sixth lens element is SD, an axialdistance between the object-side surface of the first lens element andthe image-side surface of the sixth lens element is TD, and they satisfythe condition: SD/TD=0.89.

In the 1st embodiment, an axial distance between the image-side surfaceof the sixth lens element and the image surface is BL, the axialdistance between the object-side surface of the first lens element andthe image-side surface of the sixth lens element is TD, and they satisfythe condition: BL/TD=0.14.

In the 1st embodiment, the focal length of the image capturing lenssystem is f, a maximum image height of the image capturing lens systemis ImgH, and they satisfy f/ImgH=2.55.

In the 1st embodiment, an entrance pupil diameter of the image capturinglens system is EPD, the maximum image height of the image capturing lenssystem is ImgH, and they satisfy EPD/ImgH=0.98.

In the 1st embodiment, the half of the maximal field of view of theimage capturing lens system is HFOV, and it satisfies the condition:tan(2*HFOV)=0.89.

In the 1st embodiment, an axial distance between the object-side surfaceof the first lens element and the image surface is TL, a verticaldistance between a maximum effective diameter position on the image-sidesurface of the sixth lens element and the optical axis is Y62, avertical distance between a maximum effective diameter position on theobject-side surface of the first lens element and the optical axis isY11, and they satisfy the condition: TL/(Y62−Y11)=6.17.

2nd Embodiment

FIG. 2A is a schematic view of an image capturing apparatus according tothe 2nd embodiment of the present disclosure. FIG. 2B shows, in orderfrom left to right, longitudinal spherical aberration curves, astigmaticfield curves and a distortion curve of the image capturing apparatusaccording to the 2nd embodiment.

In FIG. 2A, the image capturing apparatus includes an image capturinglens system (not otherwise herein labeled) of the present disclosure andan image sensor 290. The image capturing lens system includes, in orderfrom an object side to an image side, an aperture stop 200, a first lenselement 210, a second lens element 220, a third lens element 230, afourth lens element 240, a fifth lens element 250, and a sixth lenselement 260.

The first lens element 210 with positive refractive power has anobject-side surface 211 being convex in a paraxial region thereof and animage-side surface 212 being convex in a paraxial region thereof, whichare both aspheric, and the first lens element 210 is made of plasticmaterial.

The second lens element 220 with negative refractive power has anobject-side surface 221 being concave in a paraxial region thereof andan image-side surface 222 being concave in a paraxial region thereof,which are both aspheric, and the second lens element 220 is made ofplastic material.

The third lens element 230 with positive refractive power has anobject-side surface 231 being convex in a paraxial region thereof and animage-side surface 232 being concave in a paraxial region thereof, whichare both aspheric and have inflection points. The third lens element 230is made of plastic material.

The fourth lens element 240 with negative refractive power has anobject-side surface 241 being convex in a paraxial region thereof and animage-side surface 242 being concave in a paraxial region thereof, whichare both aspheric, and the fourth lens element 240 is made of plasticmaterial.

The fifth lens element 250 with negative refractive power has anobject-side surface 251 being concave in a paraxial region thereof andan image-side surface 252 being concave in a paraxial region thereof,which are both aspheric and have inflection points. The fifth lenselement 250 is made of plastic material.

The sixth lens element 260 with positive refractive power has anobject-side surface 261 being convex in a paraxial region thereof and animage-side surface 262 being convex in a paraxial region thereof, whichare both aspheric, and the sixth lens element 260 is made of plasticmaterial.

The image capturing lens system further includes an IR cut filter 270located between the sixth lens element 260 and an image surface 280. TheIR cut filter 270 is made of glass material and will not affect thefocal length of the image capturing lens system. The image sensor 290 isdisposed on or near the image surface 280 of the image capturing lenssystem.

The detailed optical data of the 2nd embodiment are shown in TABLE 3,and the aspheric surface data are shown in TABLE 4, wherein the units ofthe curvature radius, the thickness and the focal length are expressedin mm, and HFOV is a half of the maximal field of view.

TABLE 3 (2nd Embodiment) f = 11.18 mm, Fno = 2.91, HFOV = 18.9 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length0 Object Plano Infinity 1 Ape. Stop Plano −0.700 2 Lens 1 2.772 ASP1.657 Plastic 1.544 55.9 4.65 3 −23.142 ASP 0.330 4 Lens 2 −19.621 ASP0.411 Plastic 1.639 23.5 −6.18 5 4.989 ASP 0.846 6 Lens 3 13.439 ASP0.571 Plastic 1.639 23.5 116.00 7 16.143 ASP 0.581 8 Lens 4 12.429 ASP0.796 Plastic 1.544 55.9 −52.36 9 8.459 ASP 1.133 10 Lens 5 −34.265 ASP0.847 Plastic 1.544 55.9 −8.82 11 5.627 ASP 0.252 12 Lens 6 16.343 ASP1.806 Plastic 1.639 23.5 21.67 13 −86.775 ASP 0.493 14 IR Cut FilterPlano 0.345 Glass 1.517 64.2 15 Plano 0.502 16 Image Surface Plano —Note: Reference wavelength is d-line 587.6 nm

TABLE 4 Aspheric Coefficients Surface # 2 3 4 5 k = −1.1097E−01−9.0000E+01 −7.8353E+01 −1.6827E+00 A4 = 4.3036E−04 −5.9464E−03−2.3947E−02 −1.0088E−02 A6 = −2.5886E−04 −7.4234E−04 1.6162E−022.1448E−02 A8 = 4.3189E−04 6.3862E−03 3.7462E−03 −2.3871E−03 A10 =−1.3036E−04 −3.7798E−03 −6.2693E−03 −1.4936E−03 A12 = 1.9938E−059.9761E−04 2.1063E−03 3.1563E−04 A14 = −1.0236E−04 −2.5012E−04 Surface #6 7 8 9 k = 2.6884E+01 6.2618E+01 2.2077E+01 1.1334E+01 A4 = −1.9569E−03−1.0129E−03 5.0144E−04 7.4208E−04 A6 = 5.3194E−03 4.9980E−03 4.6541E−048.8773E−05 A8 = 3.8794E−03 2.1411E−03 5.5222E−06 A10 = −2.6605E−03−1.3415E−03 A12 = 6.4124E−04 3.5851E−04 A14 = −6.4388E−05 −4.8252E−05Surface # 10 11 12 13 k = 6.1920E+00 9.5456E−01 −5.0754E+01 9.0000E+01A4 = −2.9928E−02 −4.0209E−02 −1.9647E−02 −2.0453E−02 A6 = −3.1683E−033.2127E−03 7.6900E−03 6.4154E−03 A8 = 2.5016E−03 9.6653E−04 −1.4406E−03−1.0130E−03 A10 = −4.0331E−04 −3.1184E−04 1.5382E−04 9.0971E−05 A12 =1.3479E−05 3.7544E−05 −9.9307E−06 −4.9274E−06 A14 = 2.7139E−06−2.1447E−06 3.4577E−07 1.4562E−07 A16 = −1.2225E−07 4.7091E−08−5.3157E−09 −1.7985E−09

In the 2nd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in TABLE 5below are the same as those stated in the 1st embodiment withcorresponding values for the 2nd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from TABLE 3 and TABLE 4and satisfy the conditions stated in TABLE 5.

TABLE 5 2nd Embodiment f [mm] 11.18 (R5 − R6)/(R5 + R6) −0.09 Fno 2.91(R11 + R12)/(R11 − R12) −0.68 HFOV [deg.] 18.9 (|f/f3| + |f/f4|)/|f/f2|0.17 V6 23.5 Yc52/f 0.11 (V2 + V3)/V1 0.84 TL/f 0.95 Nmax 1.639 SD/TD0.92 T56/T45 0.22 BL/TD 0.15 (T12 + T56)/(T23 + T34 + 0.23 f/ImgH 2.80T45) f/R1 4.03 EPD/ImgH 0.96 f/R10 1.99 tan(2 * HFOV) 0.78 (R1 +R12)/(R1 − R12) −0.94 TL/(Y62 − Y11) 6.42

3rd Embodiment

FIG. 3A is a schematic view of an image capturing apparatus according tothe 3rd embodiment of the present disclosure. FIG. 3B shows, in orderfrom left to right, longitudinal spherical aberration curves, astigmaticfield curves and a distortion curve of the image capturing apparatusaccording to the 3rd embodiment.

In FIG. 3A, the image capturing apparatus includes an image capturinglens system (not otherwise herein labeled) of the present disclosure andan image sensor 390. The image capturing lens system includes, in orderfrom an object side to an image side, an aperture stop 300, a first lenselement 310, a second lens element 320, a third lens element 330, afourth lens element 340, a fifth lens element 350, and a sixth lenselement 360.

The first lens element 310 with positive refractive power has anobject-side surface 311 being convex in a paraxial region thereof and animage-side surface 312 being concave in a paraxial region thereof, whichare both aspheric, and the first lens element 310 is made of plasticmaterial.

The second lens element 320 with negative refractive power has anobject-side surface 321 being convex in a paraxial region thereof and animage-side surface 322 being concave in a paraxial region thereof, whichare both aspheric, and the second lens element 320 is made of plasticmaterial.

The third lens element 330 with negative refractive power has anobject-side surface 331 being concave in a paraxial region thereof andan image-side surface 332 being concave in a paraxial region thereof,which are both aspheric. The third lens element 330 is made of plasticmaterial and has inflection points on the object-side surface 331thereof.

The fourth lens element 340 with positive refractive power has anobject-side surface 341 being convex in a paraxial region thereof and animage-side surface 342 being concave in a paraxial region thereof, whichare both aspheric, and the fourth lens element 340 is made of plasticmaterial.

The fifth lens element 350 with negative refractive power has anobject-side surface 351 being convex in a paraxial region thereof and animage-side surface 352 being concave in a paraxial region thereof, whichare both aspheric and have inflection points. The fifth lens element 350is made of plastic material.

The sixth lens element 360 with positive refractive power has anobject-side surface 361 being convex in a paraxial region thereof and animage-side surface 362 being convex in a paraxial region thereof, whichare both aspheric, and the sixth lens element 360 is made of plasticmaterial.

The image capturing lens system further includes an IR cut filter 370located between the sixth lens element 360 and an image surface 380. TheIR cut filter 370 is made of glass material and will not affect thefocal length of the image capturing lens system. The image sensor 390 isdisposed on or near the image surface 380 of the image capturing lenssystem.

The detailed optical data of the 3rd embodiment are shown in TABLE 6,and the aspheric surface data are shown in TABLE 7, wherein the units ofthe curvature radius, the thickness and the focal length are expressedin mm, and HFOV is a half of the maximal field of view.

TABLE 6 (3rd Embodiment) f = 10.64 mm, Fno = 2.90, HFOV = 19.0 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length0 Object Plano Infinity 1 Ape. Stop Plano −0.667 2 Lens 1 2.741 ASP1.639 Plastic 1.544 55.9 5.60 3 21.578 ASP 0.239 4 Lens 2 20.669 ASP0.250 Plastic 1.639 23.5 −12.17 5 5.624 ASP 0.706 6 Lens 3 −76.923 ASP0.412 Plastic 1.639 23.5 −26.77 7 22.046 ASP 0.134 8 Lens 4 13.247 ASP2.200 Plastic 1.544 55.9 47.25 9 25.73 ASP 1.216 10 Lens 5 19.706 ASP0.694 Plastic 1.544 55.9 −8.57 11 3.725 ASP 0.202 12 Lens 6 25.794 ASP1.764 Plastic 1.639 23.5 31.43 13 −88.339 ASP 0.493 14 IR Cut FilterPlano 0.345 Glass 1.517 64.2 15 Plano 0.380 16 Image Surface Plano —Note: Reference wavelength is d-line 587.6 nm

TABLE 7 Aspheric Coefficients Surface # 2 3 4 5 k = −5.8950E−029.0000E+01 8.9799E+01 −1.4641E+00 A4 = 1.5890E−03 −5.2939E−03−2.3016E−02 −9.9006E−03 A6 = −2.2361E−04 −5.8308E−04 1.6315E−022.2302E−02 A8 = 4.3334E−04 6.3359E−03 3.7605E−03 −2.3288E−03 A10 =−1.2374E−04 −3.7756E−03 −6.3530E−03 −1.4855E−03 A12 = 2.2772E−051.0139E−03 2.0591E−03 2.6942E−04 A14 = −1.0486E−04 −2.4501E−04 Surface #6 7 8 9 k = 9.0000E+01 6.6519E+01 2.5817E+01 −8.4270E+00 A4 =−2.3023E−03 3.0937E−04 6.5712E−04 −2.5994E−04 A6 = 5.5290E−03 4.9138E−037.2110E−04 2.1448E−04 A8 = 4.0094E−03 2.1381E−03 7.8495E−05 −4.2925E−05A10 = −2.6329E−03 −1.3898E−03 A12 = 6.3474E−04 3.5156E−04 A14 =−6.6888E−05 −3.9688E−05 Surface # 10 11 12 13 k = 2.9378E+01 −4.0266E−015.8552E+01 −9.0000E+01 A4 = −3.2851E−02 −4.0133E−02 −1.8095E−02−2.0123E−02 A6 = −3.6064E−03 3.2000E−03 7.6026E−03 6.2807E−03 A8 =2.4620E−03 9.5742E−04 −1.5094E−03 −1.0107E−03 A10 = −4.0408E−04−3.1231E−04 1.5869E−04 9.1568E−05 A12 = 1.3844E−05 3.7562E−05−9.8999E−06 −4.9274E−06 A14 = 2.6644E−06 −2.1371E−06 3.5226E−071.4504E−07 A16 = −1.8910E−07 4.8404E−08 −6.4370E−09 −1.8303E−09

In the 3rd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in TABLE 8below are the same as those stated in the 1st embodiment withcorresponding values for the 3rd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from TABLE 6 and TABLE 7and satisfy the conditions stated in TABLE 8.

TABLE 8 3rd Embodiment f [mm] 10.64 (R5 − R6)/(R5 + R6) 1.80 Fno 2.90(R11 + R12)/(R11 − R12) −0.55 HFOV [deg.] 19.0 (|f/f3| + |f/f4|)/|f/f2|0.71 V6 23.5 Yc52/f 0.19 (V2 + V3)/V1 0.84 TL/f 1.00 Nmax 1.639 SD/TD0.93 T56/T45 0.17 BL/TD 0.13 (T12 + T56)/(T23 + T34 + 0.21 f/ImgH 2.80T45) f/R1 3.88 EPD/ImgH 0.97 f/R10 2.86 tan(2 * HFOV) 0.78 (R1 +R12)/(R1 − R12) −0.94 TL/(Y62 − Y11) 7.29

4th Embodiment

FIG. 4A is a schematic view of an image capturing apparatus according tothe 4th embodiment of the present disclosure. FIG. 4B shows, in orderfrom left to right, longitudinal spherical aberration curves, astigmaticfield curves and a distortion curve of the image capturing apparatusaccording to the 4th embodiment.

In FIG. 4A, the image capturing apparatus includes an image capturinglens system (not otherwise herein labeled) of the present disclosure andan image sensor 490. The image capturing lens system includes, in orderfrom an object side to an image side, an aperture stop 400, a first lenselement 410, a second lens element 420, a third lens element 430, afourth lens element 440, a fifth lens element 450, and a sixth lenselement 460.

The first lens element 410 with positive refractive power has anobject-side surface 411 being convex in a paraxial region thereof and animage-side surface 412 being concave in a paraxial region thereof, whichare both aspheric, and the first lens element 410 is made of plasticmaterial.

The second lens element 420 with negative refractive power has anobject-side surface 421 being convex in a paraxial region thereof and animage-side surface 422 being concave in a paraxial region thereof, whichare both aspheric, and the second lens element 420 is made of plasticmaterial.

The third lens element 430 with negative refractive power has anobject-side surface 431 being concave in a paraxial region thereof andan image-side surface 432 being convex in a paraxial region thereof,which are both aspheric and have inflection points. The third lenselement 430 is made of plastic material.

The fourth lens element 440 with positive refractive power has anobject-side surface 441 being convex in a paraxial region thereof and animage-side surface 442 being convex in a paraxial region thereof, whichare both aspheric, and the fourth lens element 440 is made of plasticmaterial.

The fifth lens element 450 with negative refractive power has anobject-side surface 451 being convex in a paraxial region thereof and animage-side surface 452 being concave in a paraxial region thereof, whichare both aspheric and have inflection points. The fifth lens element 450is made of plastic material.

The sixth lens element 460 with positive refractive power has anobject-side surface 461 being concave in a paraxial region thereof andan image-side surface 462 being convex in a paraxial region thereof,which are both aspheric, and the sixth lens element 460 is made ofplastic material.

The image capturing lens system further includes an IR cut filter 470located between the sixth lens element 460 and an image surface 480. TheIR cut filter 470 is made of glass material and will not affect thefocal length of the image capturing lens system. The image sensor 490 isdisposed on or near the image surface 480 of the image capturing lenssystem.

The detailed optical data of the 4th embodiment are shown in TABLE 9,and the aspheric surface data are shown in TABLE 10, wherein the unitsof the curvature radius, the thickness and the focal length areexpressed in mm, and HFOV is a half of the maximal field of view.

TABLE 9 (4th Embodiment) f = 5.58 mm, Fno = 2.75, HFOV = 19.0 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length0 Object Plano Infinity 1 Ape. Stop Plano −0.400 2 Lens 1 1.546 ASP0.815 Plastic 1.544 55.9 3.12 3 14.091 ASP 0.155 4 Lens 2 9.543 ASP0.205 Plastic 1.639 23.5 −5.69 5 2.611 ASP 0.371 6 Lens 3 −11.347 ASP0.205 Plastic 1.639 23.5 −29.12 7 −29.285 ASP 0.152 8 Lens 4 15.165 ASP1.300 Plastic 1.544 55.9 11.96 9 −11.051 ASP 0.849 10 Lens 5 10.518 ASP0.414 Plastic 1.544 55.9 −4.76 11 2.048 ASP 0.117 12 Lens 6 −186.178 ASP0.842 Plastic 1.639 23.5 95.19 13 −45.930 ASP 0.230 14 IR Cut FilterPlano 0.185 Glass 1.517 64.2 15 Plano 0.083 16 Image Surface Plano —Note: Reference wavelength is d-line 587.6 nm

TABLE 10 Aspheric Coefficients Surface # 2 3 4 5 k = −4.7011E−028.9405E+01 8.1022E+01 −3.8316E+00 A4 = 1.0072E−02 −1.9114E−02−1.4665E−01 −7.0331E−02 A6 = −4.0708E−03 7.7240E−03 3.6014E−014.9295E−01 A8 = 3.4011E−02 4.7162E−01 2.8994E−01 −1.7166E−01 A10 =−3.0225E−02 −1.0013E+00 −1.6634E+00 −3.9175E−01 A12 = 1.7505E−029.0859E−01 1.8227E+00 2.2188E−01 A14 = −3.3097E−01 −7.5139E−01 Surface #6 7 8 9 k = 6.9809E+01 −9.0000E+01 5.4223E+01 6.3041E+01 A4 =−2.5860E−02 1.6955E−03 6.9458E−04 −1.7483E−02 A6 = 1.2732E−01 9.3010E−022.1789E−02 7.8075E−03 A8 = 3.0614E−01 1.5970E−01 −2.3084E−04 6.4803E−04A10 = −6.8486E−01 −3.6935E−01 A12 = 5.7185E−01 3.1343E−01 A14 =−2.0705E−01 −1.0660E−01 Surface # 10 11 12 13 k = 4.4270E+01 −3.8960E−01−9.0000E+01 −9.0000E+01 A4 = −2.1155E−01 −2.4264E−01 −7.7637E−02−9.7173E−02 A6 = −7.8642E−02 6.3585E−02 1.5508E−01 1.2805E−01 A8 =1.8052E−01 7.3255E−02 −1.1280E−01 −7.5323E−02 A10 = −1.0363E−01−8.1094E−02 4.2033E−02 2.4102E−02 A12 = 1.4168E−02 3.3897E−02−8.8192E−03 −4.4341E−03 A14 = 8.5045E−03 −6.6183E−03 1.0860E−034.4537E−04 A16 = −2.6762E−03 4.9559E−04 −7.3663E−05 −1.9787E−05

In the 4th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in TABLE 11below are the same as those stated in the 1st embodiment withcorresponding values for the 4th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from TABLE 9 and TABLE 10and satisfy the conditions stated in TABLE 11.

TABLE 11 4th Embodiment f [mm] 5.58 (R5 − R6)/(R5 + R6) −0.44 Fno 2.75(R11 + R12)/(R11 − R12) 1.65 HFOV [deg.] 19.0 (|f/f3| + |f/f4|)/|f/f2|0.67 V6 23.5 Yc52/f 0.21 (V2 + V3)/V1 0.84 TL/f 1.06 Nmax 1.639 SD/TD0.93 T56/T45 0.14 BL/TD 0.09 (T12 + T56)/(T23 + T34 + 0.20 f/ImgH 2.79T45) f/R1 3.61 EPD/ImgH 1.01 f/R10 2.72 tan(2 * HFOV) 0.78 (R1 +R12)/(R1 − R12) −0.93 TL/(Y62 − Y11) 7.54

5th Embodiment

FIG. 5A is a schematic view of an image capturing apparatus according tothe 5th embodiment of the present disclosure. FIG. 5B shows, in orderfrom left to right, longitudinal spherical aberration curves, astigmaticfield curves and a distortion curve of the image capturing apparatusaccording to the 5th embodiment.

In FIG. 5A, the image capturing apparatus includes an image capturinglens system (not otherwise herein labeled) of the present disclosure andan image sensor 590. The image capturing lens system includes, in orderfrom an object side to an image side, an aperture stop 500, a first lenselement 510, a second lens element 520, a third lens element 530, afourth lens element 540, a fifth lens element 550, and a sixth lenselement 560.

The first lens element 510 with positive refractive power has anobject-side surface 511 being convex in a paraxial region thereof and animage-side surface 512 being concave in a paraxial region thereof, whichare both aspheric, and the first lens element 510 is made of plasticmaterial.

The second lens element 520 with negative refractive power has anobject-side surface 521 being convex in a paraxial region thereof and animage-side surface 522 being concave in a paraxial region thereof, whichare both aspheric, and the second lens element 520 is made of plasticmaterial.

The third lens element 530 with negative refractive power has anobject-side surface 531 being concave in a paraxial region thereof andan image-side surface 532 being convex in a paraxial region thereof,which are both aspheric and have inflection points. The third lenselement 530 is made of plastic material.

The fourth lens element 540 with positive refractive power has anobject-side surface 541 being convex in a paraxial region thereof and animage-side surface 542 being convex in a paraxial region thereof, whichare both aspheric, and the fourth lens element 540 is made of plasticmaterial.

The fifth lens element 550 with negative refractive power has anobject-side surface 551 being convex in a paraxial region thereof and animage-side surface 552 being concave in a paraxial region thereof, whichare both aspheric and have inflection points. The fifth lens element 550is made of plastic material.

The sixth lens element 560 with positive refractive power has anobject-side surface 561 being convex in a paraxial region thereof and animage-side surface 562 being convex in a paraxial region thereof, whichare both aspheric, and the sixth lens element 560 is made of plasticmaterial.

The image capturing lens system further includes an IR cut filter 570located between the sixth lens element 560 and an image surface 580. TheIR cut filter 570 is made of glass material and will not affect thefocal length of the image capturing lens system. The image sensor 590 isdisposed on or near the image surface 580 of the image capturing lenssystem.

The detailed optical data of the 5th embodiment are shown in TABLE 12,and the aspheric surface data are shown in TABLE 13, wherein the unitsof the curvature radius, the thickness and the focal length areexpressed in mm, and HFOV is a half of the maximal field of view.

TABLE 12 (5th Embodiment) f = 6.91 mm, Fno = 2.60, HFOV = 17.0 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length0 Object Plano Infinity 1 Ape. Stop Plano −0.464 2 Lens 1 2.065 ASP1.038 Plastic 1.544 56.0 3.85 3 117.832 ASP 0.162 4 Lens 2 11.220 ASP0.174 Plastic 1.639 23.5 −7.04 5 3.191 ASP 0.480 6 Lens 3 −9.505 ASP0.314 Plastic 1.639 23.5 −53.41 7 −13.347 ASP 0.777 8 Lens 4 58.409 ASP0.847 Plastic 1.544 56.0 14.33 9 −8.955 ASP 1.311 10 Lens 5 28.954 ASP0.538 Plastic 1.530 55.8 −4.83 11 2.336 ASP 0.136 12 Lens 6 18.159 ASP0.671 Plastic 1.660 20.4 21.86 13 −69.232 ASP 0.320 14 IR Cut FilterPlano 0.224 Glass 1.517 64.2 15 Plano 0.240 16 Image Surface Plano —Note: Reference wavelength is d-line 587.6 nm

TABLE 13 Aspheric Coefficients Surface # 2 3 4 5 k = −6.6026E−02−9.0000E+01 8.2722E+01 −3.4351E+00 A4 = 4.6153E−03 −6.9674E−03−8.4746E−02 −4.3567E−02 A6 = −1.0131E−03 1.2489E−04 1.4275E−011.8481E−01 A8 = 9.0680E−03 1.2745E−01 7.6595E−02 −4.8418E−02 A10 =−5.8063E−03 −1.8417E−01 −3.0862E−01 −7.3777E−02 A12 = 2.0279E−031.1595E−01 2.3143E−01 2.7008E−02 A14 = −2.8834E−02 −6.5222E−02 Surface #6 7 8 9 k = 4.5463E+01 9.0000E+01 −6.5486E+01 1.2606E+01 A4 =−1.3409E−02 −4.3843E−03 7.6047E−03 7.3818E−04 A6 = 4.9674E−02 3.4562E−021.2283E−02 5.4036E−03 A8 = 8.2393E−02 4.3081E−02 −1.7263E−03 1.0641E−03A10 = −1.2616E−01 −6.7770E−02 A12 = 7.3210E−02 4.0342E−02 A14 =−1.7538E−02 −8.9785E−03 Surface # 10 11 12 13 k = 9.0000E+01 −3.1661E−01−4.2455E+01 −9.0000E+01 A4 = −1.3020E−01 −1.6401E−01 −4.4497E−02−3.2959E−02 A6 = −3.0898E−02 2.6925E−02 6.2257E−02 4.7905E−02 A8 =4.7912E−02 1.9969E−02 −3.0313E−02 −2.0905E−02 A10 = −1.8885E−02−1.4977E−02 7.7447E−03 4.5623E−03 A12 = 1.9467E−03 4.3077E−03−1.1290E−03 −5.5543E−04 A14 = 7.6725E−04 −5.7821E−04 9.4109E−053.8858E−05 A16 = −1.7120E−04 2.9477E−05 −3.9279E−06 −1.5115E−06

In the 5th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in TABLE 14below are the same as those stated in the 1st embodiment withcorresponding values for the 5th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from TABLE 12 and TABLE 13and satisfy the conditions stated in TABLE 14.

TABLE 14 5th Embodiment f [mm] 6.91 (R5 − R6)/(R5 + R6) −0.17 Fno 2.60(R11 + R12)/(R11 − R12) −0.58 HFOV [deg.] 17.0 (|f/f3| + |f/f4|)/|f/f2|0.62 V6 20.4 Yc52/f 0.15 (V2 + V3)/V1 0.84 TL/f 1.05 Nmax 1.660 SD/TD0.93 T56/T45 0.10 BL/TD 0.12 (T12 + T56)/(T23 + T34 + 0.12 f/ImgH 3.13T45) f/R1 3.34 EPD/ImgH 1.20 f/R10 2.96 tan(2 * HFOV) 0.67 (R1 +R12)/(R1 − R12) −0.94 TL/(Y62 − Y11) 10.71

6th Embodiment

FIG. 6A is a schematic view of an image capturing apparatus according tothe 6th embodiment of the present disclosure. FIG. 6B shows, in orderfrom left to right, longitudinal spherical aberration curves, astigmaticfield curves and a distortion curve of the image capturing apparatusaccording to the 6th embodiment.

In FIG. 6A, the image capturing apparatus includes an image capturinglens system (not otherwise herein labeled) of the present disclosure andan image sensor 690. The image capturing lens system includes, in orderfrom an object side to an image side, an aperture stop 600, a first lenselement 610, a second lens element 620, a third lens element 630, afourth lens element 640, a fifth lens element 650, and a sixth lenselement 660.

The first lens element 610 with positive refractive power has anobject-side surface 611 being convex in a paraxial region thereof and animage-side surface 612 being concave in a paraxial region thereof, whichare both aspheric, and the first lens element 610 is made of plasticmaterial.

The second lens element 620 with negative refractive power has anobject-side surface 621 being convex in a paraxial region thereof and animage-side surface 622 being concave in a paraxial region thereof, whichare both aspheric, and the second lens element 620 is made of plasticmaterial.

The third lens element 630 with negative refractive power has anobject-side surface 631 being convex in a paraxial region thereof and animage-side surface 632 being concave in a paraxial region thereof, whichare both aspheric. The third lens element 630 is made of plasticmaterial and the object-side surface 631 of which has inflection points.

The fourth lens element 640 with positive refractive power has anobject-side surface 641 being convex in a paraxial region thereof and animage-side surface 642 being convex in a paraxial region thereof, whichare both aspheric, and the fourth lens element 640 is made of plasticmaterial.

The fifth lens element 650 with negative refractive power has anobject-side surface 651 being convex in a paraxial region thereof and animage-side surface 652 being concave in a paraxial region thereof, whichare both aspheric and have inflection points. The fifth lens element 650is made of plastic material.

The sixth lens element 660 with positive refractive power has anobject-side surface 661 being convex in a paraxial region thereof and animage-side surface 662 being convex in a paraxial region thereof, whichare both aspheric, and the sixth lens element 660 is made of plasticmaterial.

The image capturing lens system further includes an IR cut filter 670located between the sixth lens element 660 and an image surface 680. TheIR cut filter 670 is made of glass material and will not affect thefocal length of the image capturing lens system. The image sensor 690 isdisposed on or near the image surface 680 of the image capturing lenssystem.

The detailed optical data of the 6th embodiment are shown in TABLE 15,and the aspheric surface data are shown in TABLE 16, wherein the unitsof the curvature radius, the thickness and the focal length areexpressed in mm, and HFOV is a half of the maximal field of view.

TABLE 15 (6th Embodiment) f = 10.29 mm, Fno = 2.65, HFOV = 16.6 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length0 Object Plano Infinity 1 Ape. Stop Plano −0.700 2 Lens 1 2.969 ASP1.573 Plastic 1.535 55.8 5.95 3 36.121 ASP 0.262 4 Lens 2 17.158 ASP0.270 Plastic 1.639 23.3 −9.20 5 4.349 ASP 0.715 6 Lens 3 84.911 ASP0.633 Plastic 1.530 55.8 −92.17 7 30.928 ASP 0.854 8 Lens 4 21.778 ASP0.958 Plastic 1.530 55.8 16.36 9 −14.185 ASP 2.428 10 Lens 5 43.652 ASP0.894 Plastic 1.530 55.8 −6.92 11 3.358 ASP 0.218 12 Lens 6 33.517 ASP1.189 Plastic 1.639 23.3 17.26 13 −16.204 ASP 0.300 14 IR Cut FilterPlano 0.300 Glass 1.517 64.2 15 Plano 0.281 16 Image Surface Plano —Note: Reference wavelength is d-line 587.6 nm

TABLE 16 Aspheric Coefficients Surface # 2 3 4 5 k = −7.4986E−029.0000E+01 8.3391E+01 −2.9661E+00 A4 = 1.1651E−03 −2.3906E−03−2.2896E−02 −1.1158E−02 A6 = −1.8684E−04 9.5710E−05 1.6533E−022.1756E−02 A8 = 4.3820E−04 6.2465E−03 3.7720E−03 −2.3316E−03 A10 =−1.1942E−04 −3.8193E−03 −6.3869E−03 −1.5179E−03 A12 = 1.8372E−051.0129E−03 2.0260E−03 2.3921E−04 A14 = −1.0708E−04 −2.4115E−04 Surface #6 7 8 9 k = −9.0000E+01 8.5447E+01 −2.8282E+01 3.0780E+01 A4 =−4.9618E−03 3.5629E−04 3.9064E−04 −1.8265E−03 A6 = 5.7146E−03 4.2327E−031.1892E−03 2.8991E−04 A8 = 4.0341E−03 2.1346E−03 −6.9347E−05 5.1120E−05A10 = −2.6169E−03 −1.4028E−03 1.2647E−06 −2.1167E−07 A12 = 6.3931E−043.5252E−04 A14 = −6.5230E−05 −3.3367E−05 Surface # 10 11 12 13 k =−8.0856E+01 −9.0330E−02 −5.5110E+01 6.2595E+00 A4 = −3.0613E−02−4.2786E−02 −1.0456E−02 −1.3095E−03 A6 = −3.3756E−03 3.1872E−037.0995E−03 4.3723E−03 A8 = 2.3475E−03 9.7461E−04 −1.4845E−03 −9.4105E−04A10 = −3.9401E−04 −3.1169E−04 1.6146E−04 9.3942E−05 A12 = 1.6791E−053.7566E−05 −9.8693E−06 −4.9655E−06 A14 = 2.8211E−06 −2.1410E−063.4418E−07 1.4599E−07 A16 = −2.7409E−07 4.6970E−08 −6.6109E−09−2.8962E−09

In the 6th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in TABLE 17below are the same as those stated in the 1st embodiment withcorresponding values for the 6th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from TABLE 15 and TABLE 16and satisfy the conditions stated in TABLE 17.

TABLE 17 6th Embodiment f [mm] 10.29 (R5 − R6)/(R5 + R6) 0.47 Fno 2.65(R11 + R12)/(R11 − R12) 0.35 HFOV [deg.] 16.6 (|f/f3| + |f/f4|)/|f/f2|0.66 V6 23.3 Yc52/f — (V2 + V3)/V1 1.42 TL/f 1.06 Nmax 1.639 SD/TD 0.93T56/T45 0.09 BL/TD 0.09 (T12 + T56)/(T23 + T34 + 0.12 f/ImgH 3.21 T45)f/R1 3.46 EPD/ImgH 1.21 f/R10 3.06 tan(2 * HFOV) 0.65 (R1 + R12)/(R1 −R12) −0.69 TL/(Y62 − Y11) 10.84

7th Embodiment

FIG. 7A is a schematic view of an image capturing apparatus according tothe 7th embodiment of the present disclosure. FIG. 7B shows, in orderfrom left to right, longitudinal spherical aberration curves, astigmaticfield curves and a distortion curve of the image capturing apparatusaccording to the 7th embodiment.

In FIG. 7A, the image capturing apparatus includes an image capturinglens system (not otherwise herein labeled) of the present disclosure andan image sensor 790. The image capturing lens system includes, in orderfrom an object side to an image side, a first lens element 710, anaperture stop 700, a second lens element 720, a third lens element 730,a fourth lens element 740, a fifth lens element 750, and a sixth lenselement 760.

The first lens element 710 with positive refractive power has anobject-side surface 711 being convex in a paraxial region thereof and animage-side surface 712 being concave in a paraxial region thereof, whichare both aspheric, and the first lens element 710 is made of plasticmaterial.

The second lens element 720 with negative refractive power has anobject-side surface 721 being convex in a paraxial region thereof and animage-side surface 722 being concave in a paraxial region thereof, whichare both aspheric, and the second lens element 720 is made of plasticmaterial.

The third lens element 730 with positive refractive power has anobject-side surface 731 being convex in a paraxial region thereof and animage-side surface 732 being convex in a paraxial region thereof, whichare both aspheric and have inflection points. The third lens element 730is made of plastic material.

The fourth lens element 740 with positive refractive power has anobject-side surface 741 being concave in a paraxial region thereof andan image-side surface 742 being convex in a paraxial region thereof,which are both aspheric, and the fourth lens element 740 is made ofplastic material.

The fifth lens element 750 with negative refractive power has anobject-side surface 751 being convex in a paraxial region thereof and animage-side surface 752 being concave in a paraxial region thereof, whichare both aspheric and have inflection points. The fifth lens element 750is made of plastic material.

The sixth lens element 760 with positive refractive power has anobject-side surface 761 being convex in a paraxial region thereof and animage-side surface 762 being convex in a paraxial region thereof, whichare both aspheric, and the sixth lens element 760 is made of plasticmaterial.

The image capturing lens system further includes an IR cut filter 770located between the sixth lens element 760 and an image surface 780. TheIR cut filter 770 is made of glass material and will not affect thefocal length of the image capturing lens system. The image sensor 790 isdisposed on or near the image surface 780 of the image capturing lenssystem.

The detailed optical data of the 7th embodiment are shown in TABLE 18,and the aspheric surface data are shown in TABLE 19, wherein the unitsof the curvature radius, the thickness and the focal length areexpressed in mm, and HFOV is a half of the maximal field of view.

TABLE 18 (7th Embodiment) f = 5.32 mm, Fno = 2.90, HFOV = 17.7 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length0 Object Plano Infinity 1 Lens 1 1.592 ASP 0.865 Plastic 1.535 55.8 3.242 15.551 ASP 0.090 3 Ape. Stop Plano 0.000 4 Lens 2 9.569 ASP 0.145Plastic 1.633 23.4 −4.99 5 2.362 ASP 0.369 6 Lens 3 312.064 ASP 0.342Plastic 1.530 55.8 36.58 7 −20.665 ASP 0.297 8 Lens 4 −1946.05 ASP 0.518Plastic 1.530 55.8 13.83 9 −7.303 ASP 1.394 10 Lens 5 9.247 ASP 0.482Plastic 1.514 56.8 −4.34 11 1.766 ASP 0.109 12 Lens 6 13.578 ASP 0.593Plastic 1.639 23.3 17.71 13 −66.641 ASP 0.230 14 IR Cut Filter Plano0.165 Glass 1.517 64.2 15 Plano 0.091 16 Image Surface Plano — Note:Reference wavelength is d-line 587.6 nm

TABLE 19 Aspheric Coefficients Surface # 1 2 4 5 k = −2.5132E−028.5297E+01 8.1337E+01 −3.0776E+00 A4 = 1.0186E−02 −1.2236E−02−1.3874E−01 −6.7255E−02 A6 = −7.0641E−03 8.8111E−03 3.2515E−014.3497E−01 A8 = 2.9171E−02 4.0650E−01 2.5039E−01 −1.5554E−01 A10 =−2.5492E−02 −8.3341E−01 −1.3843E+00 −3.3494E−01 A12 = 1.4564E−027.6893E−01 1.4322E+00 1.7974E−01 A14 = −3.0796E−01 −5.4095E−01 Surface #6 7 8 9 k = −9.0000E+01 −7.1654E+01 9.0000E+01 3.0656E+01 A4 =−3.1413E−02 2.8313E−03 1.3249E−03 −1.1078E−02 A6 = 1.1386E−01 8.2738E−022.3430E−02 5.6798E−03 A8 = 2.6692E−01 1.3806E−01 −4.8133E−03 3.5729E−03A10 = −5.6639E−01 −3.0693E−01 −4.3114E−05 1.4912E−04 A12 = 4.5620E−012.5174E−01 A14 = −1.6375E−01 −7.6970E−02 Surface # 10 11 12 13 k =−3.9272E+01 −1.5174E−01 5.4004E+01 9.0000E+01 A4 = −1.8675E−01−2.5697E−01 −6.2043E−02 −3.0781E−02 A6 = −6.5742E−02 6.0816E−021.3525E−01 9.0619E−02 A8 = 1.5379E−01 6.4143E−02 −9.6244E−02 −6.0158E−02A10 = −8.5753E−02 −6.7558E−02 3.5069E−02 1.9530E−02 A12 = 1.1999E−022.7002E−02 −7.1187E−03 −3.4860E−03 A14 = 6.6836E−03 −5.0795E−038.1125E−04 3.6030E−04 A16 = −2.1514E−03 3.6109E−04 −5.0376E−05−2.4081E−05

In the 7th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in TABLE 20below are the same as those stated in the 1st embodiment withcorresponding values for the 7th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from TABLE 18 and TABLE 19and satisfy the conditions stated in TABLE 20.

TABLE 20 7th Embodiment f [mm] 5.32 (R5 − R6)/(R5 + R6) 1.14 Fno 2.90(R11 + R12)/(R11 − R12) −0.66 HFOV [deg.] 17.7 (|f/f3| + |f/f4|)/|f/f2|0.50 V6 23.3 Yc52/f — (V2 + V3)/V1 1.42 TL/f 1.07 Nmax 1.639 SD/TD 0.82T56/T45 0.08 BL/TD 0.09 (T12 + T56)/(T23 + T34 + 0.10 f/ImgH 3.02 T45)f/R1 3.34 EPD/ImgH 1.04 f/R10 3.01 tan(2 * HFOV) 0.71 (R1 + R12)/(R1 −R12) −0.95 TL/(Y62 − Y11) 9.86

8th Embodiment

FIG. 8A is a schematic view of an image capturing apparatus according tothe 8th embodiment of the present disclosure. FIG. 8B shows, in orderfrom left to right, longitudinal spherical aberration curves, astigmaticfield curves and a distortion curve of the image capturing apparatusaccording to the 8th embodiment.

In FIG. 8A, the image capturing apparatus includes an image capturinglens system (not otherwise herein labeled) of the present disclosure andan image sensor 890. The image capturing lens system includes, in orderfrom an object side to an image side, a first lens element 810, a secondlens element 820, an aperture stop 800, a third lens element 830, afourth lens element 840, a fifth lens element 850, and a sixth lenselement 860, wherein the image capturing lens system has a total of sixlens elements with refractive power.

The first lens element 810 with positive refractive power has anobject-side surface 811 being convex in a paraxial region thereof and animage-side surface 812 being concave in a paraxial region thereof, whichare both aspheric, and the first lens element 810 is made of plasticmaterial.

The second lens element 820 with negative refractive power has anobject-side surface 821 being convex in a paraxial region thereof and animage-side surface 822 being concave in a paraxial region thereof, whichare both aspheric, and the second lens element 820 is made of plasticmaterial.

The third lens element 830 with positive refractive power has anobject-side surface 831 being concave in a paraxial region thereof andan image-side surface 832 being convex in a paraxial region thereof,which are both aspheric and have inflection points. The third lenselement 830 is made of plastic material.

The fourth lens element 840 with positive refractive power has anobject-side surface 841 being convex in a paraxial region thereof and animage-side surface 842 being convex in a paraxial region thereof, whichare both aspheric, and the fourth lens element 840 is made of plasticmaterial.

The fifth lens element 850 with negative refractive power has anobject-side surface 851 being convex in a paraxial region thereof and animage-side surface 852 being concave in a paraxial region thereof, whichare both aspheric and have inflection points. The fifth lens element 850is made of plastic material.

The sixth lens element 860 with positive refractive power has anobject-side surface 861 being convex in a paraxial region thereof and animage-side surface 862 being convex in a paraxial region thereof, whichare both aspheric, and the sixth lens element 860 is made of plasticmaterial.

The image capturing lens system further includes an IR cut filter 870located between the sixth lens element 860 and an image surface 880. TheIR cut filter 870 is made of glass material and will not affect thefocal length of the image capturing lens system. The image sensor 890 isdisposed on or near the image surface 880 of the image capturing lenssystem.

The detailed optical data of the 8th embodiment are shown in TABLE 21,and the aspheric surface data are shown in TABLE 22, wherein the unitsof the curvature radius, the thickness and the focal length areexpressed in mm, and HFOV is a half of the maximal field of view.

TABLE 21 (8th Embodiment) f = 9.37 mm, Fno = 2.80, HFOV = 18.2 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length0 Object Plano Infinity 1 Lens 1 2.944 ASP 1.337 Plastic 1.535 55.8 5.962 32.433 ASP 0.130 3 Lens 2 16.685 ASP 0.270 Plastic 1.633 23.4 −9.35 44.340 ASP 0.248 5 Ape. Stop Plano 0.332 6 Lens 3 −1238.420 ASP 0.393Plastic 1.614 25.6 93.75 7 −55.032 ASP 0.098 8 Lens 4 118.867 ASP 1.573Plastic 1.530 55.8 21.86 9 −12.780 ASP 3.276 10 Lens 5 11.369 ASP 0.733Plastic 1.514 56.8 −8.44 11 3.068 ASP 0.219 12 Lens 6 47.346 ASP 0.716Plastic 1.639 23.3 46.79 13 −80.572 ASP 0.400 14 IR Cut Filter Plano0.300 Glass 1.517 64.2 15 Plano 0.180 16 Image Surface Plano — Note:Reference wavelength is d-line 587.6 nm

TABLE 22 Aspheric Coefficients Surface # 1 2 4 5 k = −1.3436E−027.9063E+01 8.0548E+01 −3.9473E+00 A4 = 1.8194E−03 −1.9527E−03−2.2445E−02 −1.1801E−02 A6 = −4.0500E−04 7.0872E−04 1.6305E−022.2058E−02 A8 = 4.2554E−04 6.1132E−03 3.8253E−03 −2.2828E−03 A10 =−1.1124E−04 −3.9588E−03 −6.3475E−03 −1.5183E−03 A12 = 1.9278E−051.0271E−03 1.9993E−03 2.5956E−04 A14 = −1.0911E−04 −2.3944E−04 Surface #6 7 8 9 k = −9.0000E+01 −3.7777E+01 −9.0000E+01 3.0431E+01 A4 =−5.4089E−03 6.7595E−04 −2.1899E−04 −1.0723E−03 A6 = 5.5763E−034.2118E−03 1.1739E−03 1.9454E−04 A8 = 4.0348E−03 2.0995E−03 −5.6603E−053.2783E−05 A10 = −2.6090E−03 −1.4210E−03 8.8356E−06 −1.1214E−06 A12 =6.3559E−04 3.4776E−04 A14 = −7.0371E−05 −3.2797E−05 Surface # 10 11 1213 k = −7.5973E+01 −1.0837E−01 7.8295E+01 9.0000E+01 A4 = −3.2499E−02−4.8505E−02 −7.2141E−03 −1.4624E−03 A6 = −3.5629E−03 3.0750E−036.5107E−03 4.2980E−03 A8 = 2.3218E−03 9.7845E−04 −1.4580E−03 −9.2311E−04A10 = −3.9490E−04 −3.1113E−04 1.6226E−04 8.9584E−05 A12 = 1.6935E−053.7568E−05 −9.9109E−06 −4.6537E−06 A14 = 2.8334E−06 −2.1504E−063.4043E−07 1.5050E−07 A16 = −2.8454E−07 4.4713E−08 −6.5130E−09−3.6972E−09

In the 8th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in TABLE 23below are the same as those stated in the 1st embodiment withcorresponding values for the 8th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from TABLE 21 and TABLE 22and satisfy the conditions stated in TABLE 23.

TABLE 23 8th Embodiment f [mm] 9.37 (R5 − R6)/(R5 + R6) 0.91 Fno 2.80(R11 + R12)/(R11 − R12) −0.26 HFOV [deg.] 18.2 (|f/f3| + |f/f4|)/|f/f2|0.53 V6 23.3 Yc52/f 0.20 (V2 + V3)/V1 0.88 TL/f 1.09 Nmax 1.639 SD/TD0.79 T56/T45 0.07 BL/TD 0.09 (T12 + T56)/(T23 + T34 + 0.09 f/ImgH 2.93T45) f/R1 3.18 EPD/ImgH 1.05 f/R10 3.05 tan(2 * HFOV) 0.74 (R1 +R12)/(R1 − R12) −0.93 TL/(Y62 − Y11) 9.96

The foregoing description, for purpose of explanation, has beendescribed with reference to specific embodiments. It is to be noted thatTABLES 1-23 show different data of the different embodiments; however,the data of the different embodiments are obtained from experiments. Theembodiments were chosen and described in order to best explain theprinciples of the disclosure and its practical applications, and therebyto enable others skilled in the art to best utilize the disclosure andvarious embodiments with various modifications as are suited to theparticular use contemplated. The embodiments depicted above and theappended drawings are exemplary and are not intended to be exhaustive orto limit the scope of the present disclosure to the precise formsdisclosed. Many modifications and variations are possible in view of theabove teachings.

What is claimed is:
 1. An image capturing lens system, comprising, inorder from an object side to an image side: a first lens element withpositive refractive power having an object-side surface being convexthereof; a second lens element having negative refractive power; a thirdlens element; a fourth lens element; a fifth lens element with negativerefractive power having at least one of an object-side surface and animage-side surface thereof being aspheric and having at least oneinflection point thereof; and a sixth lens element with positiverefractive power having both an object-side surface and an image-sidesurface being convex thereof and at least one of the object-side surfaceand the image-side surface thereof being aspheric; wherein the imagecapturing lens system has a total of six lens elements; wherein an axialdistance between the image-side surface of the sixth lens element and animage surface is BL, an axial distance between the object-side surfaceof the first lens element and the image-side surface of the sixth lenselement is TD, a focal length of the image capturing lens system is f, acurvature radius of the object-side surface of the first lens element isR1, an axial distance between the fifth lens element and the sixth lenselement is T56, a central thickness of the first lens element is CT1,and the following conditions are satisfied:0<BL/TD<0.40;3.10<f/R1<7.50; andT56<CT1.
 2. The image capturing lens system of claim 1, wherein thefirst lens element has an image-side surface being concave thereof. 3.The image capturing lens system of claim 1, further comprising anaperture stop disposed between an imaged object and the third lenselement, wherein each of the first lens element, the second lenselement, the third lens element, the fourth lens element, the fifth lenselement and the sixth lens element is a single lens element.
 4. Theimage capturing lens system of claim 1, wherein an Abbe number of thesixth lens element is V6, and the following condition is satisfied:V6<30.
 5. The image capturing lens system of claim 1, wherein the thirdlens element has at least one inflection point thereof.
 6. The imagecapturing lens system of claim 1, wherein a curvature radius of theobject-side surface of the sixth lens element is R11, a curvature radiusof the image-side surface of the sixth lens element is R12, and thefollowing condition is satisfied:−1.0<(R11+R12)/(R11−R12)<1.0.
 7. The image capturing lens system ofclaim 1, wherein a curvature radius of the object-side surface of thethird lens element is R5, a curvature radius of the image-side surfaceof the third lens element is R6, and the following condition issatisfied:−1.0<(R5−R6)/(R5+R6)<1.0.
 8. The image capturing lens system of claim 1,wherein an entrance pupil diameter of the image capturing lens system isEPD, a maximum image height of the image capturing lens system is ImgH,and the following condition is satisfied:0.70<EPD/ImgH<1.50.
 9. The image capturing lens system of claim 1,wherein an axial distance between the object-side surface of the firstlens element and the image surface is TL, the focal length of the imagecapturing lens system is f, and the following condition is satisfied:0.85<TL/f<1.10.
 10. The image capturing lens system of claim 1, whereina vertical distance between a critical point on the image-side surfaceof the fifth lens element and an optical axis is Yc52, the focal lengthof the image capturing lens system is f, and the following condition issatisfied:0.05<Yc52/f<0.50.
 11. The image capturing lens system of claim 1, thefocal length of the image capturing lens system is f, and the followingcondition is satisfied:4.0 mm<f<12.0 mm.
 12. The image capturing lens system of claim 1,wherein the focal length of the image capturing lens system is f, amaximum image height of the image capturing lens system is ImgH, and thefollowing condition is satisfied:2.35<f/ImgH.
 13. The image capturing lens system of claim 1, wherein anaxial distance between the fourth lens element and the fifth lenselement is the largest among all axial distances between any twoadjacent lens elements of the first lens element, the second lenselement, the third lens element, the fourth lens element, the fifth lenselement, and the sixth lens element.
 14. The image capturing lens systemof claim 1, wherein the focal length of the image capturing lens systemis f, a focal length of the third lens element is f3, a focal length ofthe fourth lens element is f4, a focal length of the second lens elementis f2, and the following condition is satisfied:(|f/f3|+|f/f4|)/|f/f2|<1.0.
 15. An image capturing lens system,comprising, in order from an object side to an image side: a first lenselement with positive refractive power having an object-side surfacebeing convex thereof; a second lens element having negative refractivepower; a third lens element; a fourth lens element; a fifth lens elementwith negative refractive power having an image-side surface beingconcave, at least one of an object-side surface and the image-sidesurface thereof being aspheric, and at least one inflection pointthereof; and a sixth lens element with positive refractive power havingan image-side surface being convex thereof and at least one of anobject-side surface and the image-side surface thereof being aspheric;wherein the image capturing lens system has a total of six lenselements; an axial distance between the image-side surface of the sixthlens element and an image surface is BL, an axial distance between theobject-side surface of the first lens element and the image-side surfaceof the sixth lens element is TD, a focal length of the image capturinglens system is f, a curvature radius of the object-side surface of thefirst lens element is R1, a curvature radius of the image-side surfaceof the fifth lens element is R10, an axial distance between the fifthlens element and the sixth lens element is T56, an axial distancebetween the fourth lens element and the fifth lens element is T45, andthe following conditions are satisfied:0<BL/TD<0.40;3.10<f/R1<7.50;0.50<f/R10; andT56<T45.
 16. The image capturing lens system of claim 15, wherein thesecond lens element has an object-side surface being convex thereof. 17.The image capturing lens system of claim 15, wherein the first lenselement, the second lens element, the third lens element, the fourthlens element, the fifth lens element and the sixth lens element are madeof plastic material, a maximum refractive index among the first lenselement, the second lens element, the third lens element, the fourthlens element, the fifth lens element and the sixth lens element is Nmax,and the following condition is satisfied:N max<1.70.
 18. The image capturing lens system of claim 15, whereinobject-side surfaces and image-side surfaces of the first lens element,the second lens element, the third lens element, the fourth lenselement, the fifth lens element and the sixth lens element are allaspheric, a half of the maximal field of view of the image capturinglens system is HFOV, and the following condition is satisfied:0<tan(2*HFOV)<1.0.
 19. The image capturing lens system of claim 15,wherein an Abbe number of the first lens element is V1, an Abbe numberof the second lens element is V2, an Abbe number of the third lenselement is V3, and the following condition is satisfied:(V2+V3)N1<1.0.
 20. The image capturing lens system of claim 15, whereina focal length of the first lens element is f1, a focal length of thesecond lens element is f2, a focal length of the third lens element isf3, a focal length of the fourth lens element is f4, a focal length ofthe fifth lens element is f5, a focal length of the sixth lens elementis f6, and the following condition is satisfied:|f1|<|f3|;|f1|<|f4|;|f1|<|f6|;|f2|<|f3|;|f2|<|f4|;|f2|<|f6|;|f5|<|f3|;|f5|<|f4|; and |f5|<|f6|.
 21. The image capturing lens systemof claim 15, wherein the axial distance between the fifth lens elementand the sixth lens element is T56, the axial distance between the fourthlens element and the fifth lens element is T45, and the followingconditions are satisfied:T56/T45<0.60.
 22. The image capturing lens system of claim 15, whereinthe focal length of the image capturing lens system is f, the curvatureradius of the image-side surface of the fifth lens element is R10, andthe following conditions are satisfied:1.0<f/R10.
 23. The image capturing lens system of claim 15, wherein anaxial distance between an aperture stop and the image-side surface ofthe sixth lens element is SD, the axial distance between the object-sidesurface of the first lens element and the image-side surface of thesixth lens element is TD, and the following conditions are satisfied:0.70<SD/TD<1.0.
 24. The image capturing lens system of claim 15, whereinan axial distance between the first lens element and the second lenselement is T12, the axial distance between the fifth lens element andthe sixth lens element is T56, an axial distance between the second lenselement and the third lens element is T23, an axial distance between thethird lens element and the fourth lens element is T34, the axialdistance between the fourth lens element and the fifth lens element isT45, and the following conditions are satisfied:(T12+T56)/(T23+T34+T45)<0.30
 25. The image capturing lens system ofclaim 15, wherein the curvature radius of the object-side surface of thefirst lens element is R1, a curvature radius of the image-side surfaceof the sixth lens element is R12, an Abbe number of the sixth lenselement is V6, and the following condition is satisfied:−1.0<(R1+R12)/(R1−R12)<0; andV6<30.
 26. The image capturing lens system of claim 15, wherein an axialdistance between the object-side surface of the first lens element andan image surface is TL, a vertical distance between a maximum effectivediameter position on the image-side surface of the sixth lens elementand an optical axis is Y62, a vertical distance between a maximumeffective diameter position on the object-side surface of the first lenselement and the optical axis is Y11, and the following condition issatisfied:5.5<TL/(Y62−Y11)<12.0.
 27. An image capturing apparatus, comprising theimage capturing lens system of claim 15 and an image sensor disposed onthe image surface of the image capturing lens system.
 28. An electronicdevice, comprising the image capturing apparatus of claim 27.